GB2196115B - Optical pickup device - Google Patents

Optical pickup device

Info

Publication number
GB2196115B
GB2196115B GB8723200A GB8723200A GB2196115B GB 2196115 B GB2196115 B GB 2196115B GB 8723200 A GB8723200 A GB 8723200A GB 8723200 A GB8723200 A GB 8723200A GB 2196115 B GB2196115 B GB 2196115B
Authority
GB
United Kingdom
Prior art keywords
pickup device
optical pickup
optical
pickup
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
GB8723200A
Other versions
GB8723200D0 (en
GB2196115A (en
Inventor
Susumu Nomura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pioneer Corp
Original Assignee
Pioneer Electronic Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Publication of GB8723200D0 publication Critical patent/GB8723200D0/en
Publication of GB2196115A publication Critical patent/GB2196115A/en
Application granted granted Critical
Publication of GB2196115B publication Critical patent/GB2196115B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0908—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only
    • G11B7/0909—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only by astigmatic methods
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/094—Methods and circuits for servo offset compensation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/13—Optical detectors therefor
    • G11B7/131—Arrangement of detectors in a multiple array
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0901—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following only
GB8723200A 1986-10-03 1987-10-02 Optical pickup device Expired - Lifetime GB2196115B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1986152109U JPH0626972Y2 (en) 1986-10-03 1986-10-03 Optical pickup device

Publications (3)

Publication Number Publication Date
GB8723200D0 GB8723200D0 (en) 1987-11-04
GB2196115A GB2196115A (en) 1988-04-20
GB2196115B true GB2196115B (en) 1990-07-25

Family

ID=15533251

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8723200A Expired - Lifetime GB2196115B (en) 1986-10-03 1987-10-02 Optical pickup device

Country Status (4)

Country Link
US (1) US4815060A (en)
JP (1) JPH0626972Y2 (en)
DE (1) DE3733422A1 (en)
GB (1) GB2196115B (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2596545B2 (en) * 1987-01-07 1997-04-02 パイオニア株式会社 Focus error detecting device and method for selecting light receiving area width of photodetector used therein
GB8724575D0 (en) * 1987-10-20 1987-11-25 Renishaw Plc Focus detection system
EP0317224B1 (en) * 1987-11-17 1993-08-04 Matsushita Electric Industrial Co., Ltd. Focus detection system for an optical disk drive using photo sensor elements in the far field of information pits
JP2701324B2 (en) * 1988-06-16 1998-01-21 ソニー株式会社 Optical head device
JP2797345B2 (en) * 1988-10-29 1998-09-17 ソニー株式会社 Optical pickup device and optical disk device
US5144614A (en) * 1988-10-29 1992-09-01 Sony Corporation Optical pickup device
JP2682087B2 (en) * 1988-11-22 1997-11-26 ソニー株式会社 Optical pickup device
JPH0770073B2 (en) * 1989-08-04 1995-07-31 松下電器産業株式会社 Optical head
DE69021889T2 (en) * 1989-12-04 1996-05-02 Thomson Brandt Gmbh TRACK CONTROL SYSTEM FOR AN OPTICAL RECORDING AND SCANING UNIT.
US5097455A (en) * 1990-02-06 1992-03-17 Hewlett-Packard Company Enhanced focus sending in optical information storage systems
US5412634A (en) * 1990-02-16 1995-05-02 Deutsche Thomson-Brandt Gmbh Optical scanning device for a disc player including improved focusing apparatus
JPH0775081B2 (en) * 1990-06-27 1995-08-09 パイオニア株式会社 Optical pickup
US5233587A (en) * 1990-06-29 1993-08-03 Kabushiki Kaisha Toshiba Rotary-type optical head
US5434835A (en) * 1990-11-07 1995-07-18 Asahi Kogaku Kogyo Kabushiki Kaisha Optical disk apparatus
JPH04205728A (en) * 1990-11-29 1992-07-27 Pioneer Electron Corp Tracking error detecting device
US5278401A (en) * 1991-08-13 1994-01-11 Asahi Kogaku Kogyo Kabushiki Kaisha Optical disc apparatus having five light receiving areas for detecting focus error and tracking error
US5764619A (en) 1995-04-07 1998-06-09 Matsushita Electric Industrial Co., Ltd. Optical recording medium having two separate recording layers
US5777352A (en) * 1996-09-19 1998-07-07 Eastman Kodak Company Photodetector structure
TW336311B (en) * 1997-10-15 1998-07-11 Ind Tech Res Inst Method and device for focusing and tracking of an optical head
JP4036400B2 (en) * 1998-03-20 2008-01-23 株式会社東芝 Optical disk device
US20050238145A1 (en) * 2004-04-22 2005-10-27 Sbc Knowledge Ventures, L.P. User interface for "how to use" application of automated self service call center

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7706753A (en) * 1977-03-23 1978-12-22 Philips Nv DEVICE FOR READING AN OPTICAL RADIATION-REFLECTING INFORMATION CARRIER.
JPS57108811A (en) * 1980-12-26 1982-07-07 Hitachi Ltd Optical focus position detector
NL8202058A (en) * 1982-05-19 1983-12-16 Philips Nv OPTO-ELECTRONIC FOCUS ERROR DETECTION SYSTEM.
JPS60185230A (en) * 1984-03-02 1985-09-20 Pioneer Electronic Corp Focal error detector
JP2548106B2 (en) * 1984-05-23 1996-10-30 ソニー株式会社 Tracking / servo control device for optical disc player
JPS618744A (en) * 1984-06-22 1986-01-16 Fuji Photo Film Co Ltd Focus error detector of optical disc device
DE3546796C2 (en) * 1984-10-01 1993-09-23 Mitsubishi Denki K.K., Tokio/Tokyo, Jp
DE3640660A1 (en) * 1985-11-28 1987-06-04 Toshiba Kk DEVICE FOR DETERMINING THE POSITION OF A LENS
DE3679648D1 (en) * 1985-12-10 1991-07-11 Nec Corp OPTICAL HEAD WITH A BREATHING GRID FOR DIRECTING TWO OR MORE BENDED BEAMS TO OPTICAL DETECTORS.

Also Published As

Publication number Publication date
DE3733422A1 (en) 1988-05-05
GB8723200D0 (en) 1987-11-04
JPH0626972Y2 (en) 1994-07-20
JPS6358321U (en) 1988-04-19
US4815060A (en) 1989-03-21
GB2196115A (en) 1988-04-20

Similar Documents

Publication Publication Date Title
EP0320276A3 (en) Optical pickup device optical pickup device
EP0270874A3 (en) Optical pick-up apparatus
GB8626221D0 (en) Optical sensor device
EP0338840A3 (en) Optical pick-up device
EP0273773A3 (en) Image pickup device
EP0358294A3 (en) Optical pickup device
EP0195657A3 (en) Optical pickup
GB2196115B (en) Optical pickup device
EP0365368A3 (en) An optical pickup device
EP0301793A3 (en) Optical pickup element
EP0258890A3 (en) Optical pickup apparatus
EP0275554A3 (en) Optical device
EP0207517A3 (en) Optical pickup apparatus
GB2197068B (en) Optical sensor device
EP0287065A3 (en) An optical filter device
GB8712346D0 (en) Optical device
HK1007825A1 (en) Optical pick-up devices
EP0301792A3 (en) An optical pickup device an optical pickup device
GB2185308B (en) Optical sensor device
EP0339940A3 (en) Optical pickup device
HK181495A (en) Optical pickup device
EP0292289A3 (en) Optical pick-up device
EP0355963A3 (en) Optical component-driving device for optical pickup
GB2198531B (en) Optical sensor device
EP0269061A3 (en) An optical filter device

Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19951002